package com.dwk.config;

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.CustomExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

@Configuration
public class DelayedQueueConfig {

    //队列
    public static final String DELAYED_QUEUE_NAME = "delayed.queue";

    //交换机
    public static final String DELAYED_EXCHANGE_NAME = "delayed.exchange";

    //routing-key
    public static final String DELAYED_ROUTING_KEY = "delayed.routingkey";

    //声明队列
    @Bean
    public Queue delayedQueue() {
        return new Queue(DELAYED_QUEUE_NAME);
    }

    //声明交换机,基于插件
    @Bean
    public CustomExchange delayedExchange(){
        Map<String,Object> arguments=new HashMap<>();
        arguments.put("x-delayed-type","direct");
        return new CustomExchange(DELAYED_EXCHANGE_NAME,"x-delayed-message",true,false,arguments);
    }

    //进行绑定
    @Bean
    public Binding delayedQueueBindingDelayedExchange(@Qualifier("delayedQueue") Queue delayedQueue,
                                                      @Qualifier("delayedExchange") CustomExchange delayedExchange){
        return BindingBuilder.bind(delayedQueue).to(delayedExchange).with(DELAYED_ROUTING_KEY).noargs();
    }

}